6533b831fe1ef96bd129872e
RESEARCH PRODUCT
Highly efficient few-mode spatial beam self-cleaning at 15µm
L. LavouteVincent CoudercA. ParriauxMarc FabertStefan WabnitzOleg SidelnikovSébastien FévrierVincent KermèneGuy MillotAlessandro TonelloY. LeventouxG. GrangerMathieu JossentD. GaponovAgnès Desfarges-berthelemotKatarzyna Krupasubject
Optical fiberMaterials sciencePhysics::Optics02 engineering and technology01 natural sciencesmultimode fiberslaw.invention010309 opticsOpticsKerr effectlawSelf cleaning0103 physical sciencesComputingMilieux_MISCELLANEOUS[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]nonlinear optics; multimode fibers; Kerr effectMulti-mode optical fiberbusiness.industrynonlinear opticsBandwidth (signal processing)021001 nanoscience & nanotechnologyLaserAtomic and Molecular Physics and OpticsWavelength0210 nano-technologybusinessExcitationBeam (structure)description
We experimentally demonstrate that spatial beam self-cleaning can be highly efficient when obtained with a few-mode excitation in graded-index multimode optical fibers. By using 160 ps long, highly chirped (6 nm bandwidth at -3dB) optical pulses at 1562 nm, we demonstrate a one-decade reduction of the power threshold for spatial beam self-cleaning, with respect to previous experiments using pulses with laser wavelengths at 1030-1064 nm. Self-cleaned beams remain spatio-temporally stable for more than a decade of their peak power variation. The impact of input pulse temporal duration is also studied.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 |